She captioned it: “I can think of no better day than today, International Women’s Day, to launch my personal Instagram. I hope to use this platform to share the causes, passions and people close to my heart. #scoliosis#iwd2018#weday#firstpost”

She followed it up with an official engagement photo of her and fiancé Brooksbank.

Eugenie is the youngest daughter of Prince Andrew, the queen’s second-born son. She is eighth in Britain’s line of royal succession, though she will drop to ninth when Prince William and the Duchess of Cambridge have their third child next month.

Opening her own personal Instagram account is an unexpected move, as regular royal protocol doesn’t appear to allow for personal social media accounts.

Meghan Markle, who is due to marry Prince Harry on May 19, recently shut down her Instagram account, as well as her lifestyle blog The Tig, following the announcement of her engagement – although there were rumours that Prince Harry had previously used a “secret” Instagram account to follow Markle while they were seeing each other.